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【判断题】
卖方可以不按合同规定的货物品质交货。A.
正确
B.
错误
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举一反三
【单选题】_____ first voyage of the ship ---- Titanic was not ______ success.
A.
The, a
B.
A, a
C.
A, the
D.
The, the
【单选题】Which statement about the dangerous cargo manifest，carried on a ship，is TRUE ________．
A.
The manifest must be made up by the Master or other designated ship's officer
B.
Shipments of hazardous and non-hazardous cargo may be listed on the manifest if they are destined for the same consignee
C.
The manifest must be kept in a designated holder on or near the bridge
D.
The type of label（s）required for each cargo must be indicated
【单选题】8位D/A转换器的输出电压范围为-5~+5V,当输入量为40H时,模拟电压输出值为( )。
A.
0V
B.
－2.5V
C.
－4V
D.
2.5V 答案：C 【参考答案】D/A的输入与输出呈比例关系。（5-（-5））/（28-0）=（X-（-5））/（60H-0），计算后，X=（10*40H）/（28-0）-5=（10*64）/256-5=-2.5V
【单选题】——The captain did not leave the sinking ship till the last moment. ——So he was the last man ______ the ship.
A.
left
B.
leaving
C.
to leave
D.
to be leaving
【简答题】表达式“ AGE BETWEEN 18 AND 24 ” 等价于( )A. AGE>18AND AGE =18AND AGE 18AND AGE =18AND AGE<=24
【单选题】表达式“AGE BETWEEN 18 AND 24”等价于( ) 。
A.
AGE>18 AND G<24
B.
AGE>=18 AND G<24
C.
AGE>18 AND G<=24
D.
AGE>=18 AND AGE<=24
【简答题】My father was Chief Engineer of a merchant ship, which was sunk in World War Ⅱ. The book Night of the Uboats told the story. Memories In September ，1940，my mother ,sister and I went to Swansea ,where...
【简答题】4 位 D/A 转换器(输出电压范围为 0 ~ 10V ),其分辨率为 ,若此 DAC 的输入为 0001 ,则输出电压大小为 V 。
【单选题】设有关系表S(NO,NAME,AGE),其中AGE为年龄字段,则表达式AGE NOT BETWEEN 18 AND 24 等价于( )
A.
AGE =18 OR AGE =24
B.
AGE>=18 AND AGE<=24
C.
AGE>=18 OR AGE<=24
D.
AGE<18 OR AGE>24
【简答题】表示塑性混凝土流动性的指标为( )。A. 坍落度 B、分层度 C、沉入度 D、维勃稠度
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